%0 Journal Article
%A G. A. Serëgin
%T On the differentiability of local extremals of variational problems of the mechanics of rigidly viscoplastic media
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1987
%P 23-30
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1987_10_a4/
%G ru
%F IVM_1987_10_a4